02/19/1952
https://www.presidency.ucsb.edu...
"The designation of the above-named organizations as public international organizations within the meaning of the said International Organizations Immunities Act is not intended to abridge in any respe..."
"I hereby designate such organizations as public international organizations entitled to enjoy the privileges, exemptions, and immunities conferred by the said Act."
"I hereby prescribe the following regulations for carrying out the provisions of the joint resolution"
"The field administrator shall act under the guidance and in accordance with the instructions of the Secretary of State"